Defaulting to user installation because normal site-packages is not writeable
Looking in indexes: http://pypi.douban.com/simple
Requirement already satisfied: opencv-python in /home/qkb/.local/lib/python3.8/site-packages (4.5.4.60)
Requirement already satisfied: numpy>=1.17.3 in /home/qkb/.local/lib/python3.8/site-packages (from opencv-python) (1.21.4)
